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We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

Pam Fletcher was propulsion system chief engineer on the first Chevrolet Volt plug-in hybrid and is now executive chief engineer for electrified vehicles at GM. A racing enthusiast, Pam developed racing engines for GM , McLaren, and NASCAR's Dale Earnhardt Sr.. Her current role has her running a multi-national department overseeing electrified vehicles company-wide. Fletcher has agreed to take a moment out of her busy day to answer any questions you might have. As usual, ask as many as you'd like, but please, one per post.

A couple of weeks ago you had a chance to ask former Vice President of One Laptop per Child, and current Senior Director of the Global Learning XPRIZE Matt Keller about education and the competition. The XPRIZE challenges teams from around the world to develop open source software that will allow children in developing countries to teach themselves basic reading, writing and arithmetic with a Grand Prize of $10 million. Below you will find his answers to your questions.

Zach Weiner is the author and illustrator of a number of webcomics, most notably Saturday Morning Breakfast Cereal (SMBC). He's been a guest contributor to xkcd and founded the sketch comedy group SMBC Theater. His project Augie and the Green Knight, was the most funded children's book on Kickstarter, and his newest project The Gentleman's Single-Use Monocle offers readers emergency reading protection with a bit of class. Zach has agreed to step away from the comics for a bit and answer any questions you might have. As usual, ask as many as you'd like, but please, one per post.

The former Vice President of One Laptop per Child (OLPC) Matt Keller is currently the Senior Director of the $15 million Global Learning XPRIZE. The competition challenges teams from around the world to develop open source software solutions that will allow children in developing countries to teach themselves basic reading, writing and arithmetic within a 18 month competition period. After 18 months a panel of judges will evaluate the projects and announce semi-finalists. Semi-finalists will have a month to tweak their projects and/or reconfigure their teams before the judges elect the top five finalist to proceed. Each of the five teams selected will receive $1 million to field test their ideas with the eventual winners receiving the Grand Prize of $10 million. The Global Learning XPRIZE is recruiting teams now through April 30, 2015. Matt has agreed to answer any questions you might have about the competition and the future of education in general. As usual, ask as many as you'd like, but please, one per post.

Stephen Wolfram's accomplishments and contributions to science and computing are numerous. He earned a PhD in particle physics from Caltech at 20, and has been cited by over 30,000 research publications. Wolfram is the the author of A New Kind of Science, creator of Mathematica, the creator of Wolfram Alpha, and the founder and CEO of Wolfram Research. He developed Wolfram Language, a general multi-paradigm programming language, in 2014. Stephen has graciously agreed to answer any questions you may have for him. As usual, ask as many as you'd like, but please, one per post.

A while ago you had a chance to ask Executive Director of the Tor project Andrew Lewman about fighting laws and technology that threaten anonymity and the importance of privacy. Below you'll find his answers to your questions.

samzenpus (5) writes "Alexander Stepanov is an award winning programmer who designed the C++ Standard Template Library. Daniel E. Rose is a programmer, research scientist, and is the Chief Scientist for Search at A9.com. In addition to working together, the duo have recently written a new book titled, From Mathematics to Generic Programming. Earlier this month you had a chance to ask the pair about their book, their work, or programming in general. Below you'll find the answers to those questions."

An anonymous reader writes "Alexander Stepanov studied mathematics at Moscow State University and has been programming since 1972. His work on foundations of programming has been supported by GE, Brooklyn Polytechnic, AT&T, HP, SGI, and, since 2002, Adobe. In 1995 he received the Dr. Dobb's Journal Excellence in Programming Award for the design of the C++ Standard Template Library. Currently, he is the Senior Principal Engineer at A9.com. Daniel E. Rose is a programmer and research scientist who has held management positions at Apple, AltaVista, Xigo, Yahoo, and is the Chief Scientist for Search at A9.com. His research focuses on all aspects of search technology, ranging from low-level algorithms for index compression to human-computer interaction issues in web search. Rose led the team at Apple that created desktop search for the Macintosh. In addition to working together, the pair have recently written a book, From Mathematics to Generic Programming. Alexander and Daniel have agreed to answer any questions you may have about their book, their work, or programming in general. As usual, ask as many as you'd like, but please, one per post."

Back in November you had a chance to ask Rachel Sussman about photography and her work. Her most famous project may be the Oldest Living Things in the World, a collection of organisms that are 2,000 years old and older from around the world. Below you'll find her answers to your questions.

A few days ago you had a chance to ask the people at Hampton Creek about about their products and the science of food. Below you'll find the answers to your questions from a number of Hampton Creek employees.

samzenpus writes Hampton Creek is a food technology company that makes food healthier by utilizing a specially made egg substitute in food products. The company was selected by Bill Gates to be featured on his website in a story called, The Future of Food, and has raised $30 million in funding. Hampton Creek's latest product is called, Just Cookies, which is an eggless chocolate chip cookie dough, but it is their eggless mayo that has been in the news lately. Unilever, which manufactures Hellmann's and Best Foods mayonnaise, is suing Hampton Creek claiming that the name Just Mayo is misleading to consumers. Named one of Entrepreneur Magazine's 100 Brilliant Companies and one of CNBC's Top 50 Disruptors, Hampton Creek has picked up some impressive talent including the former lead data scientist at Google Maps, Dan Zigmond. With Thanksgiving just around the corner, Dan and the Hampton Creek team have agreed to answer any questions you may have. As usual, ask as many as you'd like, but please, one per post.